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<div class="subTitle">org.apache.commons.math3.stat.descriptive</div>
<h2 title="Interface StorelessUnivariateStatistic" class="title">Interface StorelessUnivariateStatistic</h2>
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<dt>All Superinterfaces:</dt>
<dd><a href="../../../../../../org/apache/commons/math3/util/MathArrays.Function.html" title="interface in org.apache.commons.math3.util">MathArrays.Function</a>, <a href="../../../../../../org/apache/commons/math3/stat/descriptive/UnivariateStatistic.html" title="interface in org.apache.commons.math3.stat.descriptive">UnivariateStatistic</a></dd>
</dl>
<dl>
<dt>All Known Implementing Classes:</dt>
<dd><a href="../../../../../../org/apache/commons/math3/stat/descriptive/AbstractStorelessUnivariateStatistic.html" title="class in org.apache.commons.math3.stat.descriptive">AbstractStorelessUnivariateStatistic</a>, <a href="../../../../../../org/apache/commons/math3/stat/descriptive/moment/GeometricMean.html" title="class in org.apache.commons.math3.stat.descriptive.moment">GeometricMean</a>, <a href="../../../../../../org/apache/commons/math3/stat/descriptive/moment/Kurtosis.html" title="class in org.apache.commons.math3.stat.descriptive.moment">Kurtosis</a>, <a href="../../../../../../org/apache/commons/math3/stat/descriptive/rank/Max.html" title="class in org.apache.commons.math3.stat.descriptive.rank">Max</a>, <a href="../../../../../../org/apache/commons/math3/stat/descriptive/moment/Mean.html" title="class in org.apache.commons.math3.stat.descriptive.moment">Mean</a>, <a href="../../../../../../org/apache/commons/math3/stat/descriptive/rank/Min.html" title="class in org.apache.commons.math3.stat.descriptive.rank">Min</a>, <a href="../../../../../../org/apache/commons/math3/stat/descriptive/summary/Product.html" title="class in org.apache.commons.math3.stat.descriptive.summary">Product</a>, <a href="../../../../../../org/apache/commons/math3/stat/descriptive/rank/PSquarePercentile.html" title="class in org.apache.commons.math3.stat.descriptive.rank">PSquarePercentile</a>, <a href="../../../../../../org/apache/commons/math3/stat/descriptive/moment/SecondMoment.html" title="class in org.apache.commons.math3.stat.descriptive.moment">SecondMoment</a>, <a href="../../../../../../org/apache/commons/math3/stat/descriptive/moment/Skewness.html" title="class in org.apache.commons.math3.stat.descriptive.moment">Skewness</a>, <a href="../../../../../../org/apache/commons/math3/stat/descriptive/moment/StandardDeviation.html" title="class in org.apache.commons.math3.stat.descriptive.moment">StandardDeviation</a>, <a href="../../../../../../org/apache/commons/math3/stat/descriptive/summary/Sum.html" title="class in org.apache.commons.math3.stat.descriptive.summary">Sum</a>, <a href="../../../../../../org/apache/commons/math3/stat/descriptive/summary/SumOfLogs.html" title="class in org.apache.commons.math3.stat.descriptive.summary">SumOfLogs</a>, <a href="../../../../../../org/apache/commons/math3/stat/descriptive/summary/SumOfSquares.html" title="class in org.apache.commons.math3.stat.descriptive.summary">SumOfSquares</a>, <a href="../../../../../../org/apache/commons/math3/stat/descriptive/moment/Variance.html" title="class in org.apache.commons.math3.stat.descriptive.moment">Variance</a></dd>
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<pre>public interface <span class="strong">StorelessUnivariateStatistic</span>
extends <a href="../../../../../../org/apache/commons/math3/stat/descriptive/UnivariateStatistic.html" title="interface in org.apache.commons.math3.stat.descriptive">UnivariateStatistic</a></pre>
<div class="block">Extends the definition of <a href="../../../../../../org/apache/commons/math3/stat/descriptive/UnivariateStatistic.html" title="interface in org.apache.commons.math3.stat.descriptive"><code>UnivariateStatistic</code></a> with
 <a href="../../../../../../org/apache/commons/math3/stat/descriptive/StorelessUnivariateStatistic.html#increment(double)"><code>increment(double)</code></a> and <a href="../../../../../../org/apache/commons/math3/stat/descriptive/StorelessUnivariateStatistic.html#incrementAll(double[])"><code>incrementAll(double[])</code></a> methods for adding
 values and updating internal state.
 <p>
 This interface is designed to be used for calculating statistics that can be
 computed in one pass through the data without storing the full array of
 sample values.</p></div>
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<h3>Method Summary</h3>
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<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/StorelessUnivariateStatistic.html#clear()">clear</a></strong>()</code>
<div class="block">Clears the internal state of the Statistic</div>
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<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/commons/math3/stat/descriptive/StorelessUnivariateStatistic.html" title="interface in org.apache.commons.math3.stat.descriptive">StorelessUnivariateStatistic</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/StorelessUnivariateStatistic.html#copy()">copy</a></strong>()</code>
<div class="block">Returns a copy of the statistic with the same internal state.</div>
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<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/StorelessUnivariateStatistic.html#getN()">getN</a></strong>()</code>
<div class="block">Returns the number of values that have been added.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/StorelessUnivariateStatistic.html#getResult()">getResult</a></strong>()</code>
<div class="block">Returns the current value of the Statistic.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/StorelessUnivariateStatistic.html#increment(double)">increment</a></strong>(double&nbsp;d)</code>
<div class="block">Updates the internal state of the statistic to reflect the addition of the new value.</div>
</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/StorelessUnivariateStatistic.html#incrementAll(double[])">incrementAll</a></strong>(double[]&nbsp;values)</code>
<div class="block">Updates the internal state of the statistic to reflect addition of
 all values in the values array.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/StorelessUnivariateStatistic.html#incrementAll(double[],%20int,%20int)">incrementAll</a></strong>(double[]&nbsp;values,
            int&nbsp;start,
            int&nbsp;length)</code>
<div class="block">Updates the internal state of the statistic to reflect addition of
 the values in the designated portion of the values array.</div>
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<h3>Methods inherited from interface&nbsp;org.apache.commons.math3.stat.descriptive.<a href="../../../../../../org/apache/commons/math3/stat/descriptive/UnivariateStatistic.html" title="interface in org.apache.commons.math3.stat.descriptive">UnivariateStatistic</a></h3>
<code><a href="../../../../../../org/apache/commons/math3/stat/descriptive/UnivariateStatistic.html#evaluate(double[])">evaluate</a>, <a href="../../../../../../org/apache/commons/math3/stat/descriptive/UnivariateStatistic.html#evaluate(double[],%20int,%20int)">evaluate</a></code></li>
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<h3>Method Detail</h3>
<a name="increment(double)">
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<h4>increment</h4>
<pre>void&nbsp;increment(double&nbsp;d)</pre>
<div class="block">Updates the internal state of the statistic to reflect the addition of the new value.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>d</code> - the new value.</dd></dl>
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<h4>incrementAll</h4>
<pre>void&nbsp;incrementAll(double[]&nbsp;values)
                  throws <a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></pre>
<div class="block">Updates the internal state of the statistic to reflect addition of
 all values in the values array.  Does not clear the statistic first --
 i.e., the values are added <strong>incrementally</strong> to the dataset.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>values</code> - array holding the new values to add</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></code> - if the array is null</dd></dl>
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<h4>incrementAll</h4>
<pre>void&nbsp;incrementAll(double[]&nbsp;values,
                int&nbsp;start,
                int&nbsp;length)
                  throws <a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></pre>
<div class="block">Updates the internal state of the statistic to reflect addition of
 the values in the designated portion of the values array.  Does not
 clear the statistic first -- i.e., the values are added
 <strong>incrementally</strong> to the dataset.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>values</code> - array holding the new values to add</dd><dd><code>start</code> - the array index of the first value to add</dd><dd><code>length</code> - the number of elements to add</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></code> - if the array is null or the index</dd></dl>
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<h4>getResult</h4>
<pre>double&nbsp;getResult()</pre>
<div class="block">Returns the current value of the Statistic.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>value of the statistic, <code>Double.NaN</code> if it
 has been cleared or just instantiated.</dd></dl>
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<h4>getN</h4>
<pre>long&nbsp;getN()</pre>
<div class="block">Returns the number of values that have been added.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the number of values.</dd></dl>
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<h4>clear</h4>
<pre>void&nbsp;clear()</pre>
<div class="block">Clears the internal state of the Statistic</div>
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<h4>copy</h4>
<pre><a href="../../../../../../org/apache/commons/math3/stat/descriptive/StorelessUnivariateStatistic.html" title="interface in org.apache.commons.math3.stat.descriptive">StorelessUnivariateStatistic</a>&nbsp;copy()</pre>
<div class="block">Returns a copy of the statistic with the same internal state.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/stat/descriptive/UnivariateStatistic.html#copy()">copy</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/commons/math3/stat/descriptive/UnivariateStatistic.html" title="interface in org.apache.commons.math3.stat.descriptive">UnivariateStatistic</a></code></dd>
<dt><span class="strong">Returns:</span></dt><dd>a copy of the statistic</dd></dl>
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